A Threshold Potential Is

question 64

Multiple Choice

A threshold potential is

• A)the potential achieved when two opposing forces acting upon an ion (concentration and electrical gradients) achieve a state of equilibrium
• B)the peak potential achieved during an action potential
• C)the point at which there is an explosive increase in Na+ or Ca₂₊ permeability
• D)the potential at which K+ permeability increases
• E)always a positive potential

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Definitions:

Urinary Tract

The system in the body responsible for the removal of waste and excess water through urine; it includes the kidneys, ureters, bladder, and urethra.

Nitrite

A chemical compound composed of nitrogen and oxygen, often used as an indicator of bacterial infection or for the preservation of food.

Inflammation

The body’s reaction when tissue becomes injured or infected. The four cardinal signs are redness, heat, pain, and swelling.

Urine

A liquid waste product filtered from the blood by the kidneys and expelled from the body through urination.